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Thiamine Mononitrate (Vitamin B1) - Feed Ingredient

Thiamine mononitrate is a stable, synthetic form of Vitamin B1 (thiamine), commonly used in animal feed and supplements. It plays a crucial role in carbohydrate metabolism, aiding in the conversion of glucose into energy. This vitamin is also essential for proper nerve function, muscle coordination, and overall metabolic health. Horses typically obtain thiamine from their diet through cereal grains, brans, and brewer’s yeast, while microbial synthesis in the hindgut also contributes to their daily needs.

Deficiency of thiamine in horses is uncommon but can occur due to factors such as prolonged antibiotic use, excessive grain intake, or consumption of plants containing thiaminase (e.g., bracken fern or horsetail), which degrade the vitamin. Symptoms of deficiency may include weight loss, muscle weakness, incoordination, and nervous system disorders. Thiamine mononitrate supplementation may be recommended in cases where dietary intake is insufficient or when horses experience stress, intense exercise, or digestive disturbances. Since Vitamin B1 is water-soluble, toxicity is rare, and excess amounts are excreted in the urine.

The following equine feeds, supplements and products contain Thiamine Mononitrate (Vitamin B1) as an ingredient.

Feeds, Supplements & Products
Profecta 12 (Seminole)
FiberFiber
GrainsGrains
Mineral BalanceMineral Balance
YeastYeast
Seminole Profecta 12 is a pelleted feed intended for mature, active horses and ponies. It has a moderate energy density, yeast culture, and 19% NSC (sugar and starch).
Profecta 14 (Seminole)
FiberFiber
GrainsGrains
Mineral BalanceMineral Balance
YeastYeast
Seminole Profecta 14 is a pelleted feed intended for growing, breeding and performance horses. It contains 14% protein, 7% fat and 24% NSC. This feed is fortified with chelated trace minerals and antioxidants.
ProForce Fuel (Nutrena)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
FatFat
Nutrena ProForce Fuel is a 13% fat horse feed intended for performance athletes and hard keepers. It is meant to provide a higher calorie density with a maximum of 20% NSC.
ProForce Fuel XF (Nutrena)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
FatFat
Nutrena ProForce® Fuel XF is a 13% fat horse feed formulated for high performance horses that need additional nutritional support to meet the demands of stress and rigorous training.
ProForce Senior (Nutrena)
EnergyEnergy
ExerciseExercise
FiberFiber
SeniorSenior
Nutrena ProForce Senior is an 11% fat horse feed intended for senior equine athletes. It contains energy from digestible fiber sources and extruded fat nuggets with a maximum of 18% NSC.
Proformance 14 (Excel Equine Feeds)
BroodmareBroodmare
HealthHealth
NutrientsNutrients
PerformancePerformance
Proformance 14 by Excel Equine Feeds is a fortified textured feed intended for broodmares, foals, weanlings, yearlings and performance horses.
Proformance Sales Prep (Excel Equine Feeds)
GrowthGrowth
HealthHealth
NutrientsNutrients
NutritionNutrition
Proformance Sales Prep by Excel Equine Feeds is a textured feed intended to keep growing horses in proper condition for sale day.
PROMINENT Textured Horse Feed (BUCKEYE Nutrition)
Competition HorsesCompetition Horses
MuscleMuscle
PerformancePerformance
ProteinProtein
Prominent Textured Horse Feed by Buckeye Nutrition is a complete feed formulated for performance horses. It is palatable and provides 14% protein, 32% NSC and energy from oats, wheat, corn, and soybean oil.
Protenza (Hallway)
CalmingCalming
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
NutritionNutrition
Protenza from Hallway is a textured feed fortified with Stamm 30, formulated for the competition horse. This feed contains 10% protein and 10% fat.
Prove PRO:formance (Farrier’s Magic)
Caloric EnergyCaloric Energy
FiberFiber
GrainsGrains
NutritionNutrition
Prove PRO:formance is a complete grain ration intended to help provide horses, of all ages and levels of work, with all the needed nutrients that they might not have if only fed pasture or hay.
Pure & Simple Balancer (Hallway)
NutritionNutrition
ProteinProtein
Ration BalancerRation Balancer
ToplineTopline
Pure & Simple Balancer from Hallway is marketed as a non-GMO ration balancer. Pure & Simple contains 14% protein and provides 1048 kcal per lb of digestible energy.
Purina Ultium Senior Horse Feed (Purina)
FatFat
FiberFiber
Low NSC FeedsLow NSC Feeds
SeniorSenior
Purina Ultium Senior Horse Feed is a high-fibre, high-fat, low-starch, low-sugar pelleted extruded feed specially formulated for senior horses.
Quality Blend 12% (Quality Feeds)
Easy KeeperEasy Keeper
HealthHealth
Mineral BalanceMineral Balance
VitaminsVitamins
Quality Blend 12% by Quality Feeds is a textured sweet feed intended for horses in light work, maintenance or breeding horses.
Quality Blend 14% (Quality Feeds)
EnergyEnergy
Mineral BalanceMineral Balance
PerformancePerformance
VitaminsVitamins
Quality Blend 14% is a sweet feed with vitamins and minerals. It is meant to help with growth and performance.
Quantify (Hallway)
EnergyEnergy
FatFat
NutritionNutrition
Weight IssuesWeight Issues
Quantify from Hallway is a cubed feed fortified with Stamm 30 with added fat from soy oil. This feed is intended for broodmares, stallions, performance horses, or horses that are in need of weight gain. Quantify contains 14% protein, 8% fat, and 10% fibre.
Quick (Excel Equine Feeds)
DigestionDigestion
FoalFoal
HealthHealth
NutritionNutrition
Quick by Excel Equine Feeds is a milk based pellet intended for creep feeding foals. It is designed for foals up to 5 months of age.
RACE ‘N WIN Textured Feed (BUCKEYE Nutrition)
Complete FeedComplete Feed
EnergyEnergy
Gut HealthGut Health
PerformancePerformance
RACE 'N WIN is a textured feed designed for performance horses who require high-energy feed. It also contains added amino acids, beet pulp, probiotics, and prebiotic ingredients.
Race 13 (Hallway)
Competition HorsesCompetition Horses
DigestionDigestion
FiberFiber
PerformancePerformance
Hallway's Race 13 is a textured sweet feed with high energy density to meet the calorie requirements of performance horses. It provides moderate 6% fat and 10% fibre content.
Race First (Excel Equine Feeds)
Competition HorsesCompetition Horses
HealthHealth
NutritionNutrition
PerformancePerformance
Race First is a textured feed from Excel Equine Feeds. Race First is intended for horses in heavy work, and contains ingredients intended to support digestive health.
Race Ready GT (Purina)
Competition HorsesCompetition Horses
DigestionDigestion
EnergyEnergy
PerformancePerformance
Purina® Race Ready® GT is a textured feed intended for equine athletes and race horses. It is designed to provide a higher energy density and gut support ingredients to meet the needs of performance horses.
Race Ready® Horse Feed (Purina Mills)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
Gut HealthGut Health
PerformancePerformance
Race Ready is a high-energy textured feed targeted to meet the calorie requirements of racehorses. It provides 12% crude protein, 8% crude fat, 9% fibre, and contains molasses and vegetable oil.
Radiate (Excel Equine Feeds)
HealthHealth
NutrientsNutrients
NutritionNutrition
Weight IssuesWeight Issues
Radiate from Excel Equine Feeds is a pelleted feed. This feed is intended for hard keepers. Radiate contains 12% protein and 10% fat.
Ration Balancer (Woody’s Horse Nutrition)
DigestionDigestion
Grain FreeGrain Free
ProteinProtein
Ration BalancerRation Balancer
Woody’s Feed Ration Balancer is a concentrated, pelleted feed intended to balance a forage-based diet. It provides chelated trace minerals and added probiotics. This feed is intended for all horses and ponies at any level of work.
Re-Leve (Kentucky Equine Research)
HealthHealth
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
MuscleMuscle
KER Re-Leve is a high-energy, low-starch (10%) horse feed intended to support exercise performance and muscle function. It provides energy from high-fat sources such as rice bran and soybean oil.
Re-Leve Sport (Kentucky Equine Research)
Competition HorsesCompetition Horses
EnergyEnergy
ExerciseExercise
Grain FreeGrain Free
Re-Leve Sport is a beet-pulp based feed intended for equine athletes. It contains high-fibre and high-fat energy sources such as soyhulls, rice bran and vegetable oils.
ReBuild (Pryde’s EasiFeed)
MuscleMuscle
Omega 3-6-9Omega 3-6-9
Skin + HairSkin + Hair
ToplineTopline
ReBuild by Pryde's EasiFeed is a pelleted supplement intended to help build topline and condition in all horse types.
Recovery Plus (Woody’s Horse Nutrition)
ExerciseExercise
MuscleMuscle
PerformancePerformance
RecoveryRecovery
Woody’s Recovery Plus is an equine supplement intended to be fed to horses post-exercise. It provides amino acids from whey protein concentrate, yeast, Vitamin E and other vitamins and minerals.
Recuperate (Hygain)
ElectrolyteElectrolyte
ExerciseExercise
HydrationHydration
VitaminsVitamins
Recuperate from Hygain is a supplement for horses that is intended to provide B vitamins and electrolytes. It is meant to help with exercise, muscle function, and hydration.
Red Cal (Natural Horse Vet)
CalmingCalming
ElectrolyteElectrolyte
Mineral BalanceMineral Balance
NutrientsNutrients
Red Cal by Natural Horse Vet is a granular supplement that is intended for all life stages of horses and other livestock that provides salt, minerals, and electrolytes.
Red Cal Hi-MAG (Natural Horse Vet)
ElectrolyteElectrolyte
Metabolic SyndromeMetabolic Syndrome
Mineral BalanceMineral Balance
NutrientsNutrients
Red Cal Hi-MAG by Natural Horse Vet is a granular supplement with added magnesium oxide that is intended for all life stages of horses and other livestock. It provides salt, minerals, and electrolytes.
Redglo (Farnam)
EnergyEnergy
Mineral BalanceMineral Balance
NutrientsNutrients
VitaminsVitamins
Farnam Redglo is a liquid vitamin and mineral supplement for horses. It is marketed as an iron-rich multivitamin supplement.
Refit (Excel Equine Feeds)
DigestionDigestion
MuscleMuscle
PerformancePerformance
RecoveryRecovery
Refit by Excel Equine Feeds is a pelleted supplement intended to support digestive health, muscle recovery, energy metabolism and immunity in performance horses.
ReitHoof Advanced Hoof Support (HorseTech)
Amino AcidAmino Acid
Hoof HealthHoof Health
Mineral BalanceMineral Balance
VitaminsVitamins
ReitHoof Advanced Hoof Support from HorseTech is a pelleted hoof supplement that has an alfalfa meal base. It contains minerals, vitamins, and amino acids.
Release (Hygain)
Caloric EnergyCaloric Energy
Competition HorsesCompetition Horses
HealthHealth
Weight IssuesWeight Issues
Release by Hygain is a high-energy textured feed intended for performance horses. Release contains chelated minerals and natural vitamin E intended to support hard keepers.
Reliance® Pelleted Horse Feed (Southern States)
Complete FeedComplete Feed
ExerciseExercise
HealthHealth
NutritionNutrition
Reliance® Pelleted Horse Feed is formulated for adult horses at maintenance or in light work. It provides 3.5% fat, 15% fiber, and 11% protein with energy sources including wheat middlings, corn meal, soybean hulls and cane molasses.
Resolve (Tribute)
EnergyEnergy
ImmunityImmunity
MuscleMuscle
PerformancePerformance
Resolve is a pelleted complete feed from Tribute that is formulated to provide high-fat and high-fibre content with an NSC of 17.5%. It provides added Vitamin E which can support antioxidant status.
Revive Senior (Bluegrass Horse Feed)
Complete FeedComplete Feed
JointsJoints
SeniorSenior
Weight IssuesWeight Issues
Revive Senior from Bluegrass Horse Feed is a feed that is meant to be highly digestible, support condition and joint health in senior horses. This feed can encourage weight gain and can be fed to horses with missing or worn teeth.
RG 14 (Hallway)
EnergyEnergy
FiberFiber
Gut HealthGut Health
ProteinProtein
RG 14 is a textured feed from Hallway, fortified with Stamm 30. This feed provides energy from digestible fibres and vegetable oil. RG 14 contains 14% protein, 6% fat, and 14% fibre.
Round-Up (Manna Pro) [Discontinued]
FiberFiber
Hay StretcherHay Stretcher
NutritionNutrition
ProteinProtein
Round-Up by Manna Pro is an alfalfa-based horse feed that contains 12% protein and 2% fat. It contains vitamins as well as organic and inorganic minerals.
Safe ‘N Easy Complete (Buckeye)
Complete FeedComplete Feed
DentalDental
GrainsGrains
NutritionNutrition
Buckeye SAFE 'N EASY™ Complete Pelleted Feed is a feed intended for horses or ponies with dental issues or horses with limited forage in their diet. It is meant to provide an easy-to-chew fiber blend with no corn or molasses.
SAFE ‘N EASY Pelleted Feed (BUCKEYE Nutrition)
Complete FeedComplete Feed
Easy KeeperEasy Keeper
FiberFiber
HindgutHindgut
Buckeye Safe 'N Easy™ Pelleted Feed is a 12.5% NSC horse feed intended for starch-sensitive horses and ponies or those that require a lower calorie diet. It is formulated with no corn or molasses.
Safe ‘N Easy Senior Extruded Feed (Buckeye)
DentalDental
NutrientsNutrients
NutritionNutrition
SeniorSenior
Safe 'N Easy Senior is an extruded feed in an easy-to-chew format for older horses and ponies with dental issues. This feed also contains prebiotics and probiotics to support gut health. This feed contains 14.5% NSC.
SAFE ‘N EASY Performance (BUCKEYE Nutrition)
Caloric EnergyCaloric Energy
Complete FeedComplete Feed
Mineral BalanceMineral Balance
PerformancePerformance
Buckeye SAFE 'N EASY™ Performance is a pelleted horse feed that provides high energy density from fat and fibre. It has a 13.5% NSC and is corn- and molasses-free.
SAFE ‘N EASY Textured Feed (Buckeye)
Complete FeedComplete Feed
DentalDental
Gut HealthGut Health
NutrientsNutrients
Buckeye SAFE 'N EASY Textured Feed is a 16.5% NSC feed made without corn or molasses. This feed provides moderate energy density and is intended for horses requiring a low calorie diet.
Safe Performance Controlled Starch Formula (Manna Pro)
Complete FeedComplete Feed
FatFat
NutritionNutrition
PerformancePerformance
Safe Performance Controlled Starch Formula from Manna Pro is a complete feed designed for horses at all life stages. It contains 14% crude protein and 17% NSC. Safe Performance Controlled Starch Formula contains Max-E Glo® Stabilized Rice Bran as a source of fat and energy.
Safe Performance Elite High Fat (Manna Pro)
Complete FeedComplete Feed
FatFat
NutritionNutrition
PerformancePerformance
Safe Performance Elite High Fat from Manna Pro is a beet pulp-based complete feed designed for horses at all life stages. It contains 12% crude protein and 18% NSCs. Safe Performance Elite High Fat contains Max-E Glo® Stabilized Rice Bran as a source of fat and energy. This feed contains no added corn or molasses.
Safe Performance Senior (Manna Pro)
Complete FeedComplete Feed
FiberFiber
NutritionNutrition
SeniorSenior
Safe Performance Senior from Manna Pro is a pelleted feed designed for senior horses in work. It is formulated with Max-E Glo® stabilized rice bran and beet pulp. It is a corn- and molasses-free formulation that contains 14% crude protein, 7% crude fat, and 19% NSC.
Safe Performance Special Diet (Manna Pro)
Complete FeedComplete Feed
FiberFiber
HealthHealth
Metabolic SyndromeMetabolic Syndrome
Safe Performance Special Diet from Manna Pro is a pelleted feed for adult horses. It uses Max-E Glo® stabilized rice bran as a source of fat and fiber. It contains 14% crude protein, 3% crude fat, and 17% NSC. This product uses a mix of organic and inorganic trace minerals.
Safe Starch Forage (Triple Crown)
ForageForage
Low NSC FeedsLow NSC Feeds
Metabolic SyndromeMetabolic Syndrome
Ration BalancerRation Balancer
Triple Crown Safe Starch® Forage is a forage-based feed containing a mixture of orchard and timothy hays fortified with vitamins, minerals and direct-fed microbials.
SafeChoice All Life Stages (Nutrena)
Gut HealthGut Health
ImmunityImmunity
Organic Trace MineralsOrganic Trace Minerals
ToplineTopline
SafeChoice All Life Stages is a pelleted feed that is meant to support skin and coat health, hoof health, and topline support. It is also supposed to assist with gut health and immunity, and contains organic trace minerals.

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